The stakes are considerable — thousands of jobs, tens of millions of tires and up to $4 billion in trade — and the final outcome of a year-long investigation is just weeks away.

On May 24, the U.S. Commerce Department affirmed the imposition of antidumping duties of up to 98.4% on consumer tires from South Korea, Taiwan, Thailand and Vietnam, based on its belief that such tires "are being, or are likely to be, sold in the U.S. at less than fair value."